Analysis

  • max time kernel
    131s
  • max time network
    14s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 19:02

General

  • Target

    1FINAL REVISED_INVOICE AND PACKING LIST FOR SHIPMENT Email no. M1053 dd. July 20, 2021.exe

  • Size

    908KB

  • Sample

    210727-893xs7j3ra

  • MD5

    144141ae2aa727bc13fd74745b7a1315

  • SHA1

    05c9afef4033721637adb0e8ae5bfe2339eab9af

  • SHA256

    39237253378c85888c0281afc0190177c88c3d648089782de5ae1cab7e67ecef

  • SHA512

    52d64205719b12b881008a3aa9fc1a00835ea607f81e61b7a3b27526e4e10123439419512cb113ecfb9e4dcda32b4a703c14f536c55b285b1f6be5e67332d8f5

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp

Host: ftp://universalinks.net/

Port: 21

Username: bring4@universalinks.net

Password: {lafa{u^wEx8

Signatures 11

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload ⋅ 3 IoCs
  • Drops file in Drivers directory ⋅ 1 IoCs
  • Reads data files stored by FTP clients ⋅ 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients ⋅ 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers ⋅ 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext ⋅ 1 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 2 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 1 IoCs
  • Suspicious use of SetWindowsHookEx ⋅ 1 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 9 IoCs

Processes 2

  • C:\Users\Admin\AppData\Local\Temp\1FINAL REVISED_INVOICE AND PACKING LIST FOR SHIPMENT Email no. M1053 dd. July 20, 2021.exe
    "C:\Users\Admin\AppData\Local\Temp\1FINAL REVISED_INVOICE AND PACKING LIST FOR SHIPMENT Email no. M1053 dd. July 20, 2021.exe"
    Suspicious use of SetThreadContext
    Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Users\Admin\AppData\Local\Temp\1FINAL REVISED_INVOICE AND PACKING LIST FOR SHIPMENT Email no. M1053 dd. July 20, 2021.exe
      "{path}"
      Drops file in Drivers directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1084

Network

MITRE ATT&CK Matrix

Command and Control

    Credential Access

    Defense Evasion

      Discovery

        Execution

          Exfiltration

            Impact

              Initial Access

                Lateral Movement

                  Persistence

                    Privilege Escalation

                      Replay Monitor

                      00:00 00:00

                      Downloads

                      • memory/1084-67-0x0000000000400000-0x000000000043C000-memory.dmp
                      • memory/1084-68-0x000000000043775E-mapping.dmp
                      • memory/1084-69-0x0000000000400000-0x000000000043C000-memory.dmp
                      • memory/1084-71-0x0000000004880000-0x0000000004881000-memory.dmp
                      • memory/1084-72-0x0000000004881000-0x0000000004882000-memory.dmp
                      • memory/1420-60-0x0000000000BC0000-0x0000000000BC1000-memory.dmp
                      • memory/1420-62-0x0000000000B60000-0x0000000000BBF000-memory.dmp
                      • memory/1420-63-0x00000000023D0000-0x00000000023D1000-memory.dmp
                      • memory/1420-64-0x00000000004E0000-0x00000000004E2000-memory.dmp
                      • memory/1420-65-0x0000000005D00000-0x0000000005D7F000-memory.dmp
                      • memory/1420-66-0x0000000004480000-0x00000000044B8000-memory.dmp